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Unusual trestle
 Moderated by: pipopak
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 Posted: Sun Jul 2nd, 2017 06:07 pm
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pipopak
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Unusual trestle. No idea where it is/was:
https://fairfieldfarmer.tumblr.com/image/162515711747
Jose.



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 Posted: Tue Jul 4th, 2017 02:12 pm
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Si.
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It is a very interesting bridge.


It looks weirdly 'out of scale' :shocked: as well.

The huge end log supports, compared to the track & particularly the skinny rail, almost look 'wrong'.


I wonder why the center section was made as it was ?


It looks like standard gauge to me ... maybe ?


:moose:


Si.


Nice inspiration for a logging layout for sure.


Attachment: tumblr_osh1csRmBA1uwhl54o1_1280.jpg (Downloaded 46 times)



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 Posted: Wed Jul 5th, 2017 03:48 am
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oztrainz
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Si. wrote: It is a very interesting bridge.


It looks weirdly 'out of scale' :shocked: as well.

The huge end log supports, compared to the track & particularly the skinny rail, almost look 'wrong'.


I wonder why the center section was made as it was ?

Si


To let the creek flow though unobstructed. 

Two pig-sty piers on solid ground, the 2 horizontal support beams to carry the supports to the centre of the span between the pig-sty piers that are doing most of the work. Simple backwoods logging engineering 101 - probably built that way after a central pier was washed out??


Provided the creek doesn't get high enough to bring down heavy debris that snags those horizontal support beams, it'll last for years.  


Probably good for about 10 ton axle-loading, so Shays, etc to about 40 tons all up. As to gauge?? Might be less than standard - say 3'6" or so?? if 3'6", then possibly Kiwi?



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 Posted: Wed Jul 5th, 2017 06:59 am
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oztrainz
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Hi all
After some consultation with my local logging Wiz, the trestle has now been identified as on Mcbride Creek, Columbia and Nehalem RR, near Columbia Oregon. The photo was from when the bridge was only partially cribbed. 
See https://de.wikipedia.org/wiki/Datei:Log_bridge_(crib_trestle)_on_the_Columbia_and_Nehalem_Valley_Railroad,_Columbia_County,_Oregon_(3228984849).jpg

And a later photo of the same bridge, this time fully cribbed and with Climax and train is at 
https://upload.wikimedia.org/wikipedia/commons/d/de/Crib_trestle_bridge_of_the_Columbia_and_Nehalem_Valley_Railroad_at_the_McBride_Creek.jpg

The story of the line and its locomotives is at https://en.wikipedia.org/wiki/Columbia_and_Nehalem_Valley_Railroad

The track gauge is now positively ID'd as standard gauge, so those are some pretty significant diameter logs that were used for the cribbing.



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 Posted: Wed Jul 5th, 2017 10:11 pm
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Lee B
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Outside of Elizabethton, TN. No date but the line was gone by 1932..



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